Geochus sulcatus, Broun

Leschen, Richard A. B., Davis, Steven, Brown, Samuel D. J., Brav-Cubitt, Talia & Buckley, Thomas R., 2022, The Enigmatic Dead-Leaf Miner Geochus Broun (Coleoptera: Curculionidae): Phylogenetic Placement, a New Species, and Lectotype Designations, The Coleopterists Bulletin 76 (1), pp. 1-35 : 31

GeOchUs sUlcatUs Broun , 1914 ( Figs. 6B–D , 15 , 17 )

Geochus sulcatus Broun 1914a: 129 . Type locality: Great Barrier Island .

Type Depository. BMNH: HT .

Distribution. New Zealand (CL).

Remarks. Broun based the description on a single specimen that we confirmed as the holotype.

Distinguished from other Geochus species by the combination of having elytra with convex interstriae, the dark club strongly contrasting with a pale funicle and the pronotum constricted in the apical 1/3 with distinct lateral impressions.

Type Material Examined. Holotype ( BMNH): card-mounted, “3450 [in Broun’s hand]// New Zealand. [red underline] Broun Coll. Brit. Mus. 1922-482.// Gt Barrier. March 1911. [in Broun’ hand]// Geochus sulcatus [in Broun’s hand]”.

Figures

Fig. 6. SEM images. A) Geochus rugulosus, left elytron. G. sulcatus: B) Mesonotum, C) Right elytron, D) Enlargement of elytron, showing canal openings of wax glands (arrows). G. tibialis: E) Head (dorso-anterior aspect), F) Enlargement of frons and dorsal surface of rostrum.

Fig. 15. Elytral outlines for representatives of each of the Geochus species groups.

Fig. 17. Dorsal habitus photographs of representatives of the type series or holotypes of Geochus arranged into informal groups.